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Variability in patterns of macro-epiphytic leaf community of Posidonia oceanica in the Islands of Kuriate:Western coast of Tunisia

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Journal of Coastal Life Medicine 2016年第3期4卷 211-216页

作者： Ben Brahim Mounir abdennahder moufida Feki-Sahnoun Wafa Mahfoudi Mabrouka Hamza Asma Faculty of Sciences of Sfax Road of Soukra km 4BP 802-3038 SfaxTunisia National Institut of Sciences and Technology of the Sea Center of SfaxBP 1035-CP 3018 SfaxTunisia

Objective:To test the response of the epiphyte community structure and biomass of the Posidonia oceanica(***)leaves to natural ***:Sampling of *** was carried in winter and summer on three sites in Kuriate Islands(western coast of Tunisia)subject to different environments *** of *** were preserved in seawater-formalin(5%)solution for macro-epiphytes species identification in the *** samples were examined for leaf surface per shoot and the coverage(expressed as a percentage of leaf surface)of each morphological group,then carefully scraped with a razor *** and scraped leaves were oven-dried at 60℃for 48 *** was expressed as g dry weight/***:The biomass and the percentage cover of macro-epiphytic leaves showed seasonal *** highest values of epiphytic leaves were detected in summer whereas the lowest values were registered during *** showed that Kuriate Islands functioned as a single ecosystem in terms assemblage of macro-epiphytic leaves since no significant variation was detected for biomass and percentage cover at the scale *** study showed that natural disturbance had no effect on the assemblage distribution and the biomass of macro-epiphyte on the leaves of *** between the scales of site,whereas variability at the smallest scale was *** showed that exposure to wind and current had no effect on the biomass of macro-epiphytes ***:Biomass and assemblages of macro-epiphytic leaves of *** were high in summer and homogenous between all sites *** disturbances such as exposure to wind have no effect on the distribution and the biomass of epiphytes on the shallow meadow.

关键词： Macro-epiphyte Assemblage Variability Posidonia oceanica Tunisia

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